<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
  let arr = [1,2,3,4,5];
  console.log(arr.slice(0,3)) //[1, 2, 3]
  console.log(arr.slice(0,3)) //[1, 2, 3]
  console.log(arr.slice(0,3)) //[1, 2, 3]

  console.log(arr.splice(0,3)) //[1, 2, 3]
  console.log(arr.splice(0,3)) //[4, 5]
  console.log(arr.splice(0,3)) //[]

  </script>
</body>
</html>